//
//  QuackBehavior.h
//  delegate
//
//  Created by 李广帅 on 2018/3/20.
//  Copyright © 2018年 天蓬大元. All rights reserved.
//

#import <Foundation/Foundation.h>

@protocol QuackBehavior <NSObject>
///叫声
- (void)quack;

@end
